Set aside half a day for a quieter side of Shibuya.
Start with one museum, such as the Shoto Museum of Art. Check the current exhibition and opening hours before setting out. Leave time to walk between neighborhoods and take a short break.
Book one workshop as the anchor
Allow about two hours for teaware painting and matcha at Edo Saryo. If you are visiting the museum first, leave time for the walk and avoid planning the two stops back to back.

Keep the rest of the afternoon flexible
If an exhibition is closed or the weather changes, spend a little more time at one stop. The SHIBUTABI guide has more ideas for walks around Shibuya.
Shoto Museum of Art: official visitor information
Explore teaware painting and matcha at Edo Saryo · More Shibuya travel guides